Exposing the myth that humans are natural vegans

Some vegan proponents of an all vegetable diet claim that in traditional human societies, humans got all their protein from vegetable sources.  Certain Asian and African countries are cited as lands where people have continued -- at least until recently --  to get their most of their protein from vegetable sources.  One such country is Thailand, where vegetables are abundant in the cuisine. 

However, as this photo indicates, the traditional Thai diet included abundant protein from insects.    Even in modern Bangkok residents will line up to buy an assortment of roasted insects from street vendors like this one.  Insects provide vitamin B12 which is generally found lacking in pure vegan diets.  If you are a vegan for mainly for health reasons, you might want eat your grasshopper.